You will get a corporate SaaS system from the most recognized Upwork developer
Top Rated
Project details
You will get a custom corporate SaaS system built by one of Upwork’s most recognized developers with a proven track record of $5M+ in delivered projects since 2022. I specialize in designing and developing secure, scalable, and user-friendly platforms that help companies streamline operations, improve productivity, and achieve measurable business outcomes.
My process covers everything from system architecture and backend development to modern UX/UI design, cloud setup (AWS/GCP/Azure), and API integrations. The result is a tailored SaaS platform that not only looks professional but also scales effortlessly as your business grows.
I solve key problems for enterprises, including fragmented workflows, poor usability in legacy tools, and the need for compliance-ready infrastructure.
With experience across industries like FinTech, Health & Wellness, LegalTech, Industrial SaaS, and Retail, I know how to balance technical depth with practical outcomes. Unlike many freelancers, I don’t just deliver code — I deliver business value.
Let’s build a SaaS solution that empowers your organization, enhances efficiency, and positions you ahead of the competition.
My process covers everything from system architecture and backend development to modern UX/UI design, cloud setup (AWS/GCP/Azure), and API integrations. The result is a tailored SaaS platform that not only looks professional but also scales effortlessly as your business grows.
I solve key problems for enterprises, including fragmented workflows, poor usability in legacy tools, and the need for compliance-ready infrastructure.
With experience across industries like FinTech, Health & Wellness, LegalTech, Industrial SaaS, and Retail, I know how to balance technical depth with practical outcomes. Unlike many freelancers, I don’t just deliver code — I deliver business value.
Let’s build a SaaS solution that empowers your organization, enhances efficiency, and positions you ahead of the competition.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included $7,000
These options are included with the project scope.
$7,000
- Delivery Time 30 days
- Number of Revisions 5
- Number of Pages 10
56 reviews
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JB
Jay B.
May 19, 2026
30 minute consultation
Denis is incredibly professional, detailed-oriented, and well experienced within the field. I'd recommend anyone consider his services for their project.
DB
Dana B.
May 4, 2026
Ongoing Full Stack Development (VD - 561086)
We really enjoyed working with him and appreciated the range he brought as a full stack developer. He was able to contribute across the application, from building user-facing functionality to supporting the underlying logic and integrations needed to make everything work smoothly.
He was thoughtful in how he approached development, dependable with assigned work, and clear in his communication. We appreciated that he could take a feature or technical requirement, work through the details, and deliver something functional and well-structured.
He was professional, collaborative, and easy to work with throughout the engagement. We would gladly work with him again and recommend him to anyone looking for a capable full stack developer who can contribute across multiple layers of a product.
He was thoughtful in how he approached development, dependable with assigned work, and clear in his communication. We appreciated that he could take a feature or technical requirement, work through the details, and deliver something functional and well-structured.
He was professional, collaborative, and easy to work with throughout the engagement. We would gladly work with him again and recommend him to anyone looking for a capable full stack developer who can contribute across multiple layers of a product.
DB
Dana B.
May 4, 2026
Ongoing Front-End Development (PM - 564400)
We had a great experience working with him on front-end development. He brought a strong eye for usability, clean implementation, and thoughtful attention to the details that make an application feel polished and easy to use.
He was able to take requirements and design direction and turn them into functional, well-structured front-end components. He communicated clearly, worked efficiently, and was responsive when adjustments or refinements were needed.
We appreciated his professionalism, consistency, and ability to support the user-facing side of the product with care. He was a dependable contributor, and we would gladly recommend him to anyone looking for a skilled front-end developer.
He was able to take requirements and design direction and turn them into functional, well-structured front-end components. He communicated clearly, worked efficiently, and was responsive when adjustments or refinements were needed.
We appreciated his professionalism, consistency, and ability to support the user-facing side of the product with care. He was a dependable contributor, and we would gladly recommend him to anyone looking for a skilled front-end developer.
DB
Dana B.
May 4, 2026
Ongoing Development (VV - 566235)
He was a pleasure to work with and made a meaningful contribution to our development efforts. He was quick to understand the project, adapt to our workflow, and produce solid work with minimal ramp-up time.
One of the things we appreciated most was his ability to take ownership of assigned tasks and see them through. He was steady, communicative, and thoughtful in how he approached the work. When questions or blockers came up, he addressed them professionally and kept things moving.
He brought a positive attitude, strong technical capability, and a dependable work style to the project. We’re grateful for his support and would gladly recommend him to other teams looking for a reliable developer.
One of the things we appreciated most was his ability to take ownership of assigned tasks and see them through. He was steady, communicative, and thoughtful in how he approached the work. When questions or blockers came up, he addressed them professionally and kept things moving.
He brought a positive attitude, strong technical capability, and a dependable work style to the project. We’re grateful for his support and would gladly recommend him to other teams looking for a reliable developer.
DB
Dana B.
May 4, 2026
Ongoing Full Stack Development (VA - 551029)
He played an important role in helping us move our development work forward. As a full stack developer, he was able to jump into both front-end and back-end tasks, understand the bigger picture, and contribute in a way that was practical, efficient, and dependable.
What stood out most was his ability to work through technical challenges without needing excessive direction. He communicated clearly, followed through on commitments, and stayed focused on delivering solutions that supported the needs of the project.
What stood out most was his ability to work through technical challenges without needing excessive direction. He communicated clearly, followed through on commitments, and stayed focused on delivering solutions that supported the needs of the project.
About Denis
Full Stack Developer | AI Automation & Integration for Your Product
99%
Job Success
Kharkiv, Ukraine - 9:04 pm local time
🔐 𝗞𝗲𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀:
1. Full-stack development — end-to-end product building, front to back
2. AI automation — streamlining workflows and processes with AI
3. Prototyping — fast, working proof-of-concepts to validate ideas
4. Hardening — taking over what you've already built and turning it into a production-grade solution
🌠 My background is in custom software development, and I spent a while working as a hands-on engineer. I was lucky enough to spend my entire career working with fast-growing, large-scale, and enterprise clients, representing an outsourcing vendor.
🌌 Apart from development activities, I was engaged in many others: interviewing engineers, participating in pre-sales, training programs, leading and driving development processes, and much more. I was always a company guy and was interested in and open to everything.
👴🏻 That’s where I matured as an engineer. I learned a lot along the way, saw how painful the software development process could be, and understood the pros and cons of different organizations, including where Fortune 100 companies struggle.
📺 I’m a professional engineer focused on delivering business outcomes for you — not a part-time freelancer juggling Upwork with a full-time job or doing it for extra income. I'm working with all types of clients and budgets.
✅ 99% Job Success Score; 100 + projects delivered — from idea to production-ready software
🛡 Expert-Vetted — interviewed and approved by the Upwork team
🚀 Fastest-Growing Upwork Profile Globally — $4M+ earned across multiple profiles since 2022
🌍 Most Recognized & Viewed Upwork Profile Worldwide
💰 Scaled 5 Upwork Profiles to $300K+ revenue each with strong inbound leads
🏢 Delivered Projects for Fortune 100 & Inc. 5000 Companies and UAE government
🧠 Led Pre-Sales, Estimations, Code Reviews & Tech Interviews for top-tier clients
💻 Even if we don’t end up working together, I’ll help you identify risks and guide you on how to make the product happen — because in the end, it’s all about mindset, not just coding skills.
💡 Answering a question how am I different in this competitive AI industry — the answer is simple: mindset. You can learn endless frameworks, libraries, languages — alright, cool, but mindset and deep understanding of this world outside and inside the industry is what really makes a difference.
Steps for completing your project
After purchasing the project, send requirements so Denis can start the project.
Delivery time starts when Denis receives requirements from you.
Denis works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements specification
We analyze requirements and provide a detailed timeline
Development
We start the main development phase and build the app based on requirements